Respuesta :
Step-by-step explanation:
The total number of parts is 4 + 1 + 2 = 7.
Nickel is 4/7 of the mass: 4/7 × 35 kg = 20 kg.
Zinc is 1/7 of the mass: 1/7 × 35 kg = 5 kg.
Copper is 2/7 of the mass: 2/7 × 35 = 10 kg.
Step-by-step explanation:
The total number of parts is 4 + 1 + 2 = 7.
Nickel is 4/7 of the mass: 4/7 × 35 kg = 20 kg.
Zinc is 1/7 of the mass: 1/7 × 35 kg = 5 kg.
Copper is 2/7 of the mass: 2/7 × 35 = 10 kg.